Interlocking joint for metallic frames



March 13, 1928. a 1,662,728

W. WAIT INTERLOCKING JOINT FOR METALLIC FRAMES Filed Feb. 9, 1927 2 Sheets-Sheet 1 @fi' INVENTOR. I L M ATTORNEY March v13, 1928. 1,662,728

w. WAIT INTERLOCKING JOINT FOR METALLIC FRAMES Filed Feb/9, 1927 2 Sheets-Sheet 2 YATTORNEY Patented Mar. 13, 1928.

PATENT OFFICE.

.WESLEY WAIT, or nnwnunen, NEW YORK.

INTERLOCKING JOINT FOR METALLIC FRAMES.

Application filed February 9, 1927. Serial No. 167,009.

This invention relates to improvements in interlocking joints for metallic columns and girders, such as are employed in heavy build ing construction. It has for its object the provision of a joint in which the component parts can be readily assembled in interlocking relation, one in which the use of rivets and bolts is avoided, and one in which the load is distributed was to avoid its concentration on any part that might be susceptible to easy fracture. The structure of the joint is described in detail "hereinafter and illustrated in the accompanyingdrawings, and the novelty is pointed out in the ap pended claims. I

In the drawings, in which similar reference characters designate corresponding parts. I

Figure 1 is a side elevation, partly in section and partly broken away, of a joint embodying the invention.

Figure 2 is a horizontal section on the line 22 of Fig. 1.

Figure 3 is a side elevation, partly in sec tion and partly broken away, showing a side of the joint at right angles to that shown in Fig.

Figure 4 is a plan view of the upper end of the lower section of the column and the chair seated therein.

Figures 5 and 6 are detail perspective views showing the ends of the two forms of girders.

Figures 7 and 8 are detail. perspective views showing the joining ends of the column sections.

Figure 9 is a detail perspective view show ing the chair that is mounted'in the upper end of the lower column section.

Referring to the drawings in detail, 10 and 11 designate, respectively, upper and lower sections of a column of H-shape crossarea; and 12 and 13, respectively, designate girders of I-shape cross-area. In the upper end of the lower column section 11 the web 14 is cut away between the flanged sides 15 and in these sides are slots 16 in the ver tical plane of the web. the width of the slots being approximately the same as the thickness of the web. Between the flanged sides 15 is the chair 17 seated upon the upper edge of the web 14, the chair being recessed in its under sides, as at 36, to receive the edge of the web. With the chair in place it fits the space between the flanged sides with its upper surface flush with the walls at the lower ends of the slots16. The upper face of the chair is flat and it is convex on its under side to provide the required thickness above the web 14 to accommodate the recess receiving the edge of the web and also to impart the strength required by the chair to sustain its load. Projecting from the upper face of the chair adjacent its outer edges, are the lugs 18 extending across the chair and having openings 19 between their inner ends.

Extending from the opopsite sides 15 of the lower column section 11 are the girders 12 fitting the vertical slots 16 in said sides. Each girder has alined notches 20 in its flanges on each side so that it can slip into one of the slots 16 with its inner end resting on the chair 17 and also on the edge of the side 15 at thelower end of the slot 16. The sides 15 at the edges of the slot 16 fit into the notches 20 in the flanges of the girder. V V

Projecting from the other opposite sides of the column section '11 are the girders 13 with their inner" ends resting on the chair 17. Each of these girders 13 has a notch 21 in each of its bottom flanges 22 so that the lugs 18 extend upward through the op posite notches 21 and the lower edge of the web of'the girder extends into the space 19 between the inner ends of the lugs 18,

the edge-of the web between the notches resting on the chair 17 The inner ends of the girders 13- project between the inner ends of the girders 12, the corners of the flanges of the girders 13 being cut away, as at 22, so that the inner ends of these girders fit between the ends of the girders 12.

-The upper column section 10 is seated at its lower end within the upper end of the lower section 11, the webs of the two sections being at right angles to each other and the sides of the upper section fitting between the sides of the lower section so as to provide a box-like formation at the junction of the two sections. It is obvious that the inner ends of the girders 12 could be extended between the inner ends of the girders 13 v and the cornersof the former cut away. The lower end of the upper column sectlon 1O rests on the inner ends of the girder 13.

The lower ends of the sides 23 of the secother. With the upper column section in position on the lower sect-ion, the sides 23 of the upper section extend through the notches 26 of the girders 13 and the webs of these girders tit the slots 24 in the upper column section 10.

IVith the several parts assembled as shown in Figs. 1, 2 and 3, the mutual engagement of the two column sections maintains these two members in vertical alinement and their engagei'nent with the ends of the girders, together with the engagement of the girders 13 with the lugs 18, hold both pairs of girders firmly on the chair 17 against longitudinal displacement. In this way the column sections and girders are firmly locked together and the load is so distributed over the interlocking parts as to avoid the concentration of the strain on any particular part that might be liable to fracture. Also, the interlock of the several parts avoids the use of rivets and the parts can be quickly positioned in their interlocked relation.

. What I claim is:

1. In an interlocking joint for metallic frames, the combination with a column formed of upper and lower H-shaped sec tions having mutually engaged ends with their webs normal to each other and spaced apart, and girders having ends seated between the mutually engaged ends of the column sections and between the webs of said sections, said mutually engaged ends also engaging the ends of the girders to hold the latter in place with relation to the column. t

2. In an interlocking joint for metallic frames, the combination with a column formed of upper and lower H-shaped sections having mutually engaged ends with their webs normal to each other and spaced apart, of a chair mounted in the upper end of the lower column section and seated on the webs of said lower section, and girders having ends seated on the chair, the mutually engaged column sections also engaging the ends of the girders to maintain said girders on the chair against longitudinal.

displacement.

3. In an interlocking joint for metallic frames, the combination with a column formed of upper and lower sections having the girders and column sections in assembled relation. t 4. In an interlocking joint for metalli frames, the combination with a column formed of upper and lower sections having mutually engaged ends, said sections having vertical slots in their sides at their mutually engaged ends, of a chair, mounted in the upper end of the lower column section, and flanged girders having ends positioned on the chair, said girders being arranged in pairs with the members of each pair in alined relation, the alined members of one of the pairs of girders being seated in the vertical slots in the upper end of the lower column section and the alined members 01' the other pair of girders being seated in the vertical slots in the lower end of the upper column section, said girders'having their flanges notched to permitthe seating of the girders in the slots of the column sections.

5. In an. interlocking joint for metallic frames, the combination with a column formed of upper and lower H-shaped sections having mutually engaged ends and with their webs normal to each other, said sections having their webs removedjat their mutually engaged ends and having vertical slots in their sides at their mutually engaged ends, of a chair mounted in the upper end of the lower column section, and I-shaped girders having ends positioned on the chair between the webs of the column sections and seated in the slots in the sides of the min tually engaged ends of the column sections, said girdershaving their flanges notched to permit the entrance of their webs into said slots.

In testimony whereof I affix my signature.

WESLEY WAIT. 

